公开(公告)号：US20180240400A1

公开(公告)日：2018-08-23

申请号：US15960367

申请日：2018-04-23

Applicant: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD.

Inventor： Xingyao ZHOU ,  Yuan LI

IPC: G09G3/325

Abstract: A method for driving a pixel circuit is disclosed. The method includes: a time for displaying a frame including N initialization phases and N data signal voltage writing phases before a light-emitting phase. The ith of the N data signal voltage writing phases is after the ith of the N initialization phases and before the (i+1)th of the N initialization phases, and the Nth data signal voltage writing phase is after the Nth initialization phase, 1≤i≤N−1, i is an integer and N is an integer greater than 1. In the initialization phase, an initialization voltage is applied to the gate electrode of the driving transistor by the initialization module. In the data signal voltage writing phase, a data signal voltage is applied to the gate electrode of the driving transistor by the data signal voltage writing module.

公开(公告)号：US20180130421A1

公开(公告)日：2018-05-10

申请号：US15865762

申请日：2018-01-09

Applicant: Shanghai Tianma Micro-Electronics Co., Ltd.

Inventor： Xingyao ZHOU ,  Chuanli LENG ,  Yuan LI ,  Yana GAO ,  Yue LI ,  Renyuan ZHU ,  Dongxu XIANG

IPC: G09G3/3266

CPC classification number: G09G3/3266 ,  G09G2300/0404 ,  G09G2310/0221 ,  G09G2320/0233 ,  G09G2320/0257 ,  G09G2320/0626

Abstract: An organic light emitting (OLED) display panel, a driving method thereof, and a display apparatus are provided. The OLED display panel comprises a display region including N number of pixel rows and a non-display region including a light-emitting driver circuit and a scanning driver circuit. The display region includes a first display region including N1 number of pixel rows and a second display region including N2 number of pixel rows, where N1, N2, and N are positive integers, and N1+N2=N. A pixel row in the second display region has a smaller number of pixels than a pixel row in the first display region. The light-emitting driver circuit is configured to, in scanning time S for each frame, supply a light-emitting control signal having n number of light-emitting cycles to each pixel row in the display region, where n is a positive integer.

公开(公告)号：US20140104525A1

公开(公告)日：2014-04-17

申请号：US14137945

申请日：2013-12-20

Applicant: Shanghai Tianma Micro-Electronics Co., Ltd.

Inventor： Chengfeng ZHANG ,  Yuan LI ,  Jinjin YANG

IPC: G02F1/1343

CPC classification number: G02F1/134363 ,  G09G3/3648 ,  G09G3/3655 ,  G09G2300/0876 ,  G09G2310/0218 ,  G09G2310/08

Abstract: An array substrate, a liquid crystal display and a control method thereof are disclosed. The array substrate includes scanning lines, data lines, pixel units, and common lines. Each common line is disposed along a row of pixel units. The array substrate also includes a common voltage supply line, and dual-channel selection switches each having an output terminal connected to a set of common lines, two input terminals connected to a common voltage high level supply line and a common voltage low level supply line respectively to selectively apply a high level or a low level to the common lines, thereby avoiding delay of the common voltage Vcom and the Vcom drift during a display mode and improving the display effect for an image.

Abstract translation: 公开了阵列基板，液晶显示器及其控制方法。 阵列基板包括扫描线，数据线，像素单元和公共线。 每条公共线沿着一排像素单元布置。 阵列基板还包括公共电压供应线，以及双通道选择开关，每个具有连接到一组公共线的输出端子，两个输入端子连接到公共电压高电平电源线和公共电压低电平电源线 分别选择性地向公共线施加高电平或低电平，从而避免在显示模式期间公共电压Vcom和Vcom漂移的延迟并且改善图像的显示效果。

公开(公告)号：US20180166025A1

公开(公告)日：2018-06-14

申请号：US15889643

申请日：2018-02-06

Applicant: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD.

Inventor： Xingyao ZHOU ,  Chuanli LENG ,  Yuan LI

IPC: G09G3/34 ,  G09G3/3208

CPC classification number: G09G3/3413 ,  G09G3/3208 ,  G09G3/3233 ,  G09G2230/00 ,  G09G2310/0216 ,  G09G2320/0233 ,  G09G2320/0252 ,  G09G2320/045

Abstract: The disclosure discloses a pixel circuit, a method for driving the same, a display panel and a display device, which utilize a first initialization module, a data writing module, a threshold compensation module. Besides, since the pixel circuit is further provided with a second initialization module and the second initialization module is configured to enable a signal of a first voltage terminal to flow through the driving transistor before a light emitting device emits light, after the pixel circuit displays a low-grayscale image and before the pixel circuit displays a high-grayscale image, a large current is enabled to flow through the driving transistor to compensate for a threshold voltage hysteresis effect of the driving transistor, thereby improving the problem that the brightness of a first frame is low after an existing pixel circuit has switched from displaying a low-grayscale image to displaying a high-grayscale image.

公开(公告)号：US20180151115A1

公开(公告)日：2018-05-31

申请号：US15865541

申请日：2018-01-09

Applicant: Shanghai Tianma Micro-Electronics Co., Ltd.

Inventor： Chang-ho TSENG ,  Chuanli LENG ,  Yuan LI

IPC: G09G3/325 ,  G09G3/3266 ,  G09G3/3275

CPC classification number: G09G3/325 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2300/0809 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0243 ,  G09G2310/0262 ,  G09G2310/0264 ,  G09G2320/045

Abstract: A pixel compensation circuit, an organic light-emitting display panel and an organic light-emitting display device are provided. The pixel compensation circuit includes a first switch transistor, a second switch transistor, a third switch transistor, a fourth switch transistor, a fifth switch transistor, a sixth switch transistor, a light-emitting element, a seventh switch transistor, a storage capacitor, and a drive transistor. The first switch transistor, the fourth switch transistor, and the fifth switch transistor provide a signal on a reference voltage signal terminal to a first node and provide a threshold voltage to a gate of the drive transistor. The second switch transistor and the third switch transistor couple a signal on a first power supply terminal in real time to the gate of the drive transistor. A driving current generated by the drive transistor is protected from adverse effects caused by IR Drop on the first power supply terminal.